function switch_div(number)
{
	switch(number)
	{
		case 0:
 		document.getElementById("login_mask_0").style.visibility	= "visible";
		document.getElementById("login_mask_1").style.visibility	= "hidden";
		document.getElementById("login_mask_2").style.visibility	= "hidden";
		document.getElementById("login_mask_3").style.visibility	= "hidden";
		document.getElementById("message").innerHTML				= "<br>";
		break;
		
		case 1:
 		document.getElementById("login_mask_0").style.visibility	= "hidden";
		document.getElementById("login_mask_1").style.visibility	= "visible";
		document.getElementById("login_mask_2").style.visibility	= "hidden";
		document.getElementById("login_mask_3").style.visibility	= "hidden";
		document.getElementById("message").innerHTML				= "<br>";
		break;
		
		case 2:
 		document.getElementById("login_mask_0").style.visibility	= "hidden";
		document.getElementById("login_mask_1").style.visibility	= "hidden";
		document.getElementById("login_mask_2").style.visibility	= "visible";
		document.getElementById("login_mask_3").style.visibility	= "hidden";
		document.getElementById("message").innerHTML				= "<br>";
		break;
		
		case 3:
 		document.getElementById("login_mask_0").style.visibility	= "hidden";
		document.getElementById("login_mask_1").style.visibility	= "hidden";
		document.getElementById("login_mask_2").style.visibility	= "hidden";
		document.getElementById("login_mask_3").style.visibility	= "visible";
		document.getElementById("message").innerHTML				= "<br>";
		break;

	}
}